The siren series In-ear monitors are named after famous rock songs about women.
Jerry Harvey Audio produced a special version of the Roxanne tuned for the Astell&Kern in 2014. The collaboration was so successful that the two companies will now release two more models.
The first new model is the Layla. This all new flagship model is nothing short of stunning visually as well as sonically....

“Introduction - I found these at Wal-Mart (surprisingly), and they were selling for 20 bucks, so i could not turn them down.
Design & Build - The design of these earphones are a bit plain. The earpieces have this two-tone, color of matte black and gloss gray. The cable feels very soft and pretty thick. It is not overly thick, and it does not feel cheap to me. The ear tip design is...” --zach8278